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EPA in Arizona

Information Session (April 2): Proposed Clean Air Act Tribal Minor NSR Permit for Cyprus Tohono Corporation

Date and Time

Tuesday 04/02/2019 5:00PM to 6:00PM MST
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Sif Oidak District Council Office Conference Room #2
Indian Route 15 Mile Post 27
Casa Grande, AZ 85230


EPA is proposing to issue a synthetic minor NSR permit to the Cyprus Tohono Corporation (CTC), for a mining operation (CTC Mine or Facility) located on tribal land of the Tohono O’odham Nation (Nation). The proposed permit would authorize construction of new equipment and operation of new and existing equipment (Project), subject to enforceable emissions limitations to restrict the Source’s potential to emit to levels below major source thresholds. The Facility is located 31 miles southwest of Casa Grande, Arizona, at the cross of Highway 15 and the Pima and Pinal County boundary.

To facilitate opportunities for interested persons to provide informed oral presentations at the public hearing described below, EPA will hold two public information meetings for the purpose of providing interested parties with additional information and an opportunity to obtain answers to questions about the proposed Project.